The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 04, 2003
Filed:
Jan. 05, 1999
Sony Corporation, Tokyo, JP;
Abstract
Of three-color signals R′, G′ and B′, obtained as output signals of multipliers R, G and B, designed to effectuate luminance compression of the three-color signals R, G and B sent to input terminals R, G and B by multiplying the signals R, G and B with a coefficient k, in such a manner as to maintain saturation and color hue of the three-color signals R, G and B, only the saturation of color video signals represented by the three-color signals R′, G′ and B′ is compressed by first saturation compression circuits R, G and B so that the signal level of the signal of the three-color signals R′, G′ and B′ having the highest signal level will be the clip level. Of the three prime color signals R″, G″ and B″ obtained as output signals of the first saturation compression circuits R, G and B, only the saturation of the signals R″, G″ and B″ is compressed, in a state in which the luminance and the color hue of the signals R″, G″ and B″ are maintained, in order to obtain three prime color signals R*, G* and B* the high luminance portion of which has only saturation changed.